package zz.note.thread.demo;

import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import sun.net.util.IPAddressUtil;

import javax.servlet.http.HttpServletRequest;
import java.util.Arrays;

/**
 * 异步实现记录请求日志
 * 使用aop打印日志
 * @Author: ZZ
 * @date 2022/2/16
 */
@Aspect
@Component
@Slf4j
public class WebLogAspect {

	/**
	 * 指定 zz.note.thread.demo 包下的注解
	 * */
	@Pointcut(value = "execution(* zz.note.thread.demo..*.*(..))")//两个..代表所有子目录，最后括号里的两个..代表所有参数
	public void logPointCut() {
		log.info("----------------拦截------------------");
	}

	/**
	 * 指定当前执行方法在logPointCut之前执行
	 * */
	@Before("logPointCut()")
	public void doBefore(JoinPoint joinPoint) throws Throwable{
		// 接收到请求，记录请求内容
		ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
		HttpServletRequest request = attributes.getRequest();

		// 记录下请求内容
		log.info("请求地址 : " + request.getRequestURL().toString());
		log.info("HTTP METHOD : " + request.getMethod());
		// 获取真实的ip地址
//		logger.info("IP : " + IPAddressUtil.getClientIpAddress(request));
		log.info("CLASS_METHOD : " + joinPoint.getSignature().getDeclaringTypeName() + "."
				+ joinPoint.getSignature().getName());
		log.info("参数 : " + Arrays.toString(joinPoint.getArgs()));
		//loggger.info("参数 : " + joinPoint.getArgs());
	}
	/**
	 * 指定在方法之后返回
	 * */
	@AfterReturning(returning = "ret", pointcut = "logPointCut()")// returning的值和doAfterReturning的参数名一致
	public void doAfterReturning(Object ret) throws Throwable {
		// 处理完请求，返回内容(返回值太复杂时，打印的是物理存储空间的地址)
		log.info("返回值 : " + ret);
	}

	@Around("logPointCut()")
	public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
		long startTime = System.currentTimeMillis();
		Object ob = pjp.proceed();// ob 为方法的返回值
		log.info("耗时 : " + (System.currentTimeMillis() - startTime));
		return ob;
	}
}
